Java Program to Handle Checked Exception
Checked exceptions are the subclass of the Exception class. These types of exceptions need to be handled during the compile time of the program. These exceptions can be handled by the try-catch block or by using throws keyword otherwise the program will give a compilation error.
ClassNotFoundException, IOException, SQLException etc are the examples of the checked exceptions.
I/O Exception: This Program throw I/O exception because of due FileNotFoundException is a checked exception in Java. Anytime, we want to read a file from the file system, Java forces us to handle error situations where the file is not present in the given location.
Implementation: Consider GFG.txt file does not exist.
Now let us do discuss how to handle FileNotFoundException. The answer is quite simple as we can handle it with the help of a try-catch block
- Declare the function using the throw keyword to avoid a Compilation error.
- All the exceptions throw objects when they occur try statement allows you to define a block of code to be tested for errors and catch block captures the given exception object and perform required operations.
- Using a try-catch block defined output will be shown.
File does not exist
Now let us discuss one more checked exception that is ClassNotFoundException. This Exception occurs when methods like Class.forName() and LoadClass Method etc. are unable to find the given class name as a parameter.
Again now let us handle ClassNotFoundException using try-Catch block
Class does not exist check the name of the class